Physical force fields, particles improvements and Softimage plugin

Physics:

• New PhysicalForce, PhysicalWind and PhysicalWater objects (simulation of viscous medium, buoyancy and resistance forces).
• Fluid buoyancy for all physical shapes.
• Added a set of samples with physical force fields and a rope sample.
• JointPin can attach cloth to ragdolls.
• Physics visualizers are now shown only with the editor loaded.
• Particle systems are now affected by force fields.
• Fixed velocity calculation for ragdolls transformed with setVelocityTransform() function.
• Added 'world_show_physicals' console variable.

Particles:

• New Chain type of particles for shift emitters to generate a seamless flow.
• Particles reset emitter parameters on disabling/enabling of the node.
• Some renaming in world/node files: 'stretch' -> 'length_stretch' and 'point_force' -> 'force' (run upgrade.py script to convert your data). This affected ObjectParticles API as well.
• Removed 'emitter_velocity' and 'emitter_scale' parameters from the particle systems; added slightly different 'emitter_direction' and 'emitter_spread' instead.

Chain particle systems affected by force fields:

Other stuff:

• Export plugins for Softimage 2010 (static geometry, skinned mesh animation).
• Fixed AppWindow in Linux: it provides the same keycodes regardless of the current key layout.
• Fixed node type filter in UnigineEditor.
• Refactored tessellation shaders; there is some performance improvement.
• Added 'post_filter_rgb2yuv' post-process filter that is useful for TV broadcasting.
• Improved Unigine::Image C++ API: added more functions for image processing.
• Added WidgetSpriteShader object, which can be used with a custom shader for post-process material.
• Added Unigine::ObjectMeshDynamic::updateIndices() function.
• Shadow objects force node update, there will be no shadow stalls.
• Timestamps in log files.
• WorldTransformExpression is renamed to WorldExpression.
• Refactored stereo 3D launchers, now they can are not limited to dual view mode.
• Adding array of visible nodes into the world is possible via UnigineScript.
• Swizzling is now available in UnigineScript for functions; foo().x and foo()[2] is acceptable now.
• Added EngineAnalyzer system, output can be seen via 'engine_analyze' console command.
• Fixed occluders rasterizator.
• All GUI fonts have anisotropy enabled now.
• Updated documentation on particle systems ("Principles of Operation / Objects / Particle systems" section of the manual).
• Updated article on blending in materials ("Content Creation / Materials Overview / Blending Options").

Softimage export plugin GUI (see documentation for more information on options):